private static unsafe void CheckEntry(Int32 i, ref GVHeaderEntry entry, SByte *contentPtr)
{
for (Int32 r = 0; r < 2; r++)
{
Int32 lastCharacter = entry.Offset + entry.Size - 1;
for (int k = entry.Offset; k < lastCharacter; k++)
{
if (contentPtr[k] == 0x00)
{
goto check;
}
}
if (contentPtr[lastCharacter] != 0x00)
{
goto check;
}
return;
@check:
if (TryCorrectEntry(i, ref entry))
{
continue;
}
throw new NotSupportedException($"Unexcepted character: 0x{contentPtr[lastCharacter]:X2} at position {lastCharacter}. Expected: 0x00");
}
}
public IReadOnlyCollection <String> ReadLines()
{
unsafe
{
Int32 headerOffset = Positive(_br.ReadInt32());
Int32 headerCount = Positive(_br.ReadInt32());
Int32 headerSize = checked (headerCount * sizeof(GVHeaderEntry));
Int32 contentOffset = Positive(_br.ReadInt32());
Int32 contentSize = Positive(_br.ReadInt32());
_stream.SetPosition(headerOffset);
Byte[] header = _stream.ReadBytes(headerSize);
_stream.SetPosition(contentOffset);
Byte[] content = _stream.ReadBytes(contentSize);
String[] result = new String[headerCount];
fixed(Byte *headerBytes = header)
fixed(Byte * contentBytes = content)
{
GVHeaderEntry *entriesPtr = (GVHeaderEntry *)headerBytes;
SByte * contentPtr = (SByte *)contentBytes;
for (Int32 i = 0; i < headerCount; i++)
{
if (IsEmpty(entriesPtr, i))
{
result[i] = $"{i:D4}|";
continue;
}
GVHeaderEntry entry = entriesPtr[i];
CheckEntry(i, ref entry, contentPtr);
Int32 offset = InRange(entry.Offset, minValue: 0, maxValue: contentSize - 1);
Int32 size = InRange(entry.Size, minValue: 2, maxValue: contentSize - offset); // \0 terminated strings
UInt32 value = entry.Value;
UInt32 mask = entry.Mask;
String name = new String(contentPtr, offset, size - 1, Encoding.ASCII);
if ((value & mask) != value)
{
throw new InvalidDataException($"Value 0x[{value:X8}] of the variable [{i:D4}:{name}] is out of mask [{mask:X8}].");
}
FormatTypeAndValue(mask, value, out var formattedType, out var formattedValue);
result[i] = $"{i:D4}| {formattedType} {name} = {formattedValue}";
}
}
return(result);
}
}
private static Boolean TryCorrectEntry(Int32 i, ref GVHeaderEntry entry)
{
if (i == 163 && entry.Offset == 2078 && entry.Size == 12)
{
entry.Size = 15;
return(true);
}
if (i == 164 && entry.Offset == 2090 && entry.Size == 15)
{
entry.Offset = 2093;
entry.Size = 12;
return(true);
}
if (i == 359 && entry.Offset == 4554 && entry.Size == 12)
{
entry.Size = 17;
return(true);
}
if (i == 360 && entry.Offset == 4566 && entry.Size == 17)
{
entry.Offset = 4571;
entry.Size = 12;
return(true);
}
if (i == 522 && entry.Offset == 6544 && entry.Size == 12)
{
entry.Size = 11;
return(true);
}
if (i == 523 && entry.Offset == 6556 && entry.Size == 11)
{
entry.Offset = 6555;
return(true);
}
if (i == 524 && entry.Offset == 6567 && entry.Size == 11)
{
entry.Offset = 6566;
entry.Size = 13;
return(true);
}
if (i == 525 && entry.Offset == 6578 && entry.Size == 13)
{
entry.Offset = 6579;
return(true);
}
if (i == 526 && entry.Offset == 6591 && entry.Size == 13)
{
entry.Offset = 6592;
return(true);
}
if (i == 527 && entry.Offset == 6604 && entry.Size == 13)
{
entry.Offset = 6605;
return(true);
}
if (i == 528 && entry.Offset == 6617 && entry.Size == 13)
{
entry.Offset = 6618;
entry.Size = 11;
return(true);
}
if (i == 529 && entry.Offset == 6630 && entry.Size == 11)
{
entry.Offset = 6629;
return(true);
}
if (i == 738 && entry.Offset == 8774 && entry.Size == 11)
{
entry.Size = 10;
return(true);
}
if (i == 739 && entry.Offset == 8785 && entry.Size == 10)
{
entry.Offset = 8784;
return(true);
}
if (i == 740 && entry.Offset == 8795 && entry.Size == 10)
{
entry.Offset = 8794;
return(true);
}
if (i == 741 && entry.Offset == 8805 && entry.Size == 10)
{
entry.Offset = 8804;
return(true);
}
if (i == 743 && entry.Offset == 8825 && entry.Size == 10)
{
entry.Size = 11;
return(true);
}
if (i == 744 && entry.Offset == 8835 && entry.Size == 11)
{
entry.Offset = 8836;
entry.Size = 10;
return(true);
}
return(false);
}
